@Draco: I am 75% certain the ancient Sith will factor into ep.7 somehow...
It would actually be quite cool if they somehow flesh out the whole Sith/Jedi thing now in the movies (instead of only the EU). When you watch the movies alone we never learn what the Sith are (except for evil), how they came to be, the rule of two (which hopefully gets scrapped anyway now because we need more than two Sith for the new trilogy "Sith Wars" ^^). For all that drama Sam Jackson and his posse make about the Sith, we are told not really much about them. For example they could have really thrown out the whole droid factory-chase-scene in Ep 2 and use the time to give us some background-info on Count Dooku, the Sith etc...but hey, probably Lucas had no real idea anyway...
Now old ruins, temples, exotic places of old artifacts being hunted etc, you know, adventure-stuff. Instead of space-taxes and all that bullshiat...I hope at least some of these "classic" elements will be in the new movies. Something like for example in Jedi Knight 2 when Mara Jade came to Dromund Kaas, the old ruins there, even years after it has left an impression on me...
Though whenever I am on this board, see the pics, read the stuff of you others I already imagine myself sitting in the cinema, cold December outside, then hearing the fanfares and reading the scroll-text and ... trying my best to ignore the pain in my fingers as I cramp them desperatly into the seat, praying to myself "please, please movie, do not suck..."